Victor j



V. I ROBIN.

PLUMBERS TORCH.

APPLICATION FILEQ APE. F9. 1919.

Patented N02. 25, 1919.

avwemtoz which are, that extra fuel VICTOR- J'. ROBIN, 0F BUTTE, MONTANA.

PLUMBERS TORCH.

ieeaeaa Specification of Letters Patent.

Patented Nov 25, mirth T 0 (ZZZ-whom it may concern:

Be it known that I, VICTOR J. ROBIN, a

citizen of the Republic of France, residing at Butte, in the county of Silver Bow and State of Montana, have invented certain new and useful Improvements in Plumbers Torches, of which the following is a specification.

This invention relates to a plumbers or blow torch, and an object of the invention is to provide a pilot heating device which derives its fuel from the fuel containing tank of the torch structure, an object of the invention being to provide a pilot burner by means of which the regular burner of the torch may be quickly and easily heated to the desired temperature prior to the permitting of. passage of fuel thereto without the necessity of employing any exterior agent or fuel for heating the said burner.

, In the ordinary or approved construction of plumbers torches now in use, a cup is carried by the feed pipe which leads from the fuel container to the burner of the torch and in using the torch structure, this cup is filled with alcohol or analogous fuel which is ignited, for heating the burner of the torch to the desired temperature. This construction, however, has numerous inconveniences, and undesirable features, among t be carried by the user of the torch to fill the cup when he desires to light the torch and furthertached to the ends of the coil 0 more the cup is generally positioned so that other parts except the burner of the torch are heated, and furthermore with cups of this nature, it is generally rather diflicult to heat the burner to the desired temperature.

It is an objectof this invention to provide a pilot burning attachment) including a capillary wick, which extends into the fuel in the ordinary retaining tank of the blow or plumbers torch and which leads to a suitable valve coupling, upon which is detachably connected a burner of coiled pipe of suitable material havin a nut atwhich the burner is formed, which nut is adapted for connection with the valve casing to permit the passage of fuel into the burner and also to provide a wick which extends partially through the burner for feeding the fuel upwardly thereabout, providing portions of the convolutions of the burner above the outlet openings, so that the fuel upon its passage to said outlet openings will be heated for converting into gas to provide the proper fblue flame to insure the proper heating of the burner of the torch.

Other objects of the invention will appear from the following detailed description taken in connection with the accompanying drawings, forming a part of this specification and in which drawings:

Figure 1 is a side elevation of an ordinary plumbers or blow torch showing parts thereof in section, and having theimproved pilot burner applied thereto.

Fig. 2 is a section on the line 22 of Fig. 1 and Fig. 8 is a detail side elevation of the pilot burner having parts thereof in section to illustrate the capillary wick therein.

Referrin more particularly to the drawings, l indlcates an ordinary plumber-"s or blow torch of approved type which in'cludes the receptacle or retainer 2 for the liquid fuel, and with the interior of which retainer, the pump structure 3 communicates for pumping air into the container to permit the air to become impregnated with the liquid fuel within the container for feeding to the burner 4 of the torch, to which burner the passage of fuel is controlled by the usual valve construction 5.

The pilot burner structure which is employed for initially heating the burner 4 to the necessary temperature to insure the proper combustion ofthe fuel fed thereto,

is generically indicated by the numeral 10 and comprises a relatively short length of pipe 111 which is threaded into the feed pipe 6 of the torch structure and is connected to or has formed thereupon a valve casing 12. This valve casing 12 is provided with a relatively small tortuous pathway 13 which communicates with the interior of the pipe 11 and with the upper end of the casing, opening up through the latter into a nut 14 which is detachably connected to the valve casing 12. This nut 14- is hollow and has cotton or analogous capillary material stuck therein, as shown at 15. The capilrelatively fine extension 16 which extends upwardly into the upwardly extending portion 17 of the burner structure proper 18 of the pilot burner 10. The burner structure 18 of the pilot burner structure 10 is preferably formed of relatively small pipes of any suitable material, and it is bent to provide a convolution providing a pair of lary material is provided withan elongated substantially horizontal portions 19, one of which has communication with the upper end of the upwardly extending portion 17 of the burner, while the other one has communication with the upper end of the upwick 22 which extends into the liquid fuel in the receptacle and through the pipe 11 into the valve casing 12 willbe vaporized, and converted into a volatile gas to insure the result of maximum heat therefrom upon its exit from the burner opening 20 and when ignited thereat, for heating the burner 1 of the torch structure-to the desired temperature.

The flow of the volatile fuel through the tortuous passageway 13 in the valve casing 12 is controlled by a valve stem 23 threaded into an extension 24: formed upon the valve casing 12 and provided with a suitable button 25 upon its outer end to facilitate the manual rotation of the stem 23 to move its inner end into and out of'the valve seat 26 which is formed in the valve casing 12 and interrupts the passageway 13. i

In use, the valve 23 is unseated, and by a few operations of the pump 3, the fuel will be fed or. carried upwardly by the wicks 22, 15 and 16, into the burner 18 and may be ignited at the opening 20 to properly heat the burner 18 and in turn heat the burner 4. After the burner t has been heated to the desired temperature the valve 21 is seated,

cuttin off the supply of fuel to the burner 18 an the valve 5 is opened, permitting the fuel to flow through the burner 4 of the torch structure- Changes in details may be departing from the spirit of this invention,

, but;

1 claim:

1. The combination with a plumbers' torch including aburner and a fuel retainer for supplying fuel to the burner, of a'pilot burner including a tube coiled to provide a convolution and a pair of lead sections'leading to said convolution, said tube provided made without with an upwardly directed burner opening in the lowermost ortion of the convolution for directing the flame upwardly about the upper part of the convolution, capillary wicks in said lead sections of the burner, and means communicating with said pilot burner and fuel retainer to feed fuel to said capillary wick.

2. The combination with a plumbers torch including a burner and a fuel retainer for supplying fuel to the burner, of a pilot burner including a tube coiled to provide a convolution and a pair of lead sections lead ing to said convolution, said tube provided with an upwardly directed burnero pening in the lowermost portion of the convolution for directing the flame upwardly about the upper portion of the convolution, capillary wicks in said lead sections of said burner, a

capillary wick extending into said fuel retainer to feed fuel to said first-named wicks, and a valve for controlling the feeding of fuel to said capillarly wick.

' 3. The combination 'with a plumbers torch including a burner and a fuel retainer for supplying fuel to the burner, of a valve casing, a nut threaded uponone portion of said valve casing, a burner carried by said nut and including a tube coiled to provide a convolution, and a pair of lead sections leadingto said convolution, said tube provided with an upwardly directed burner opening in the lowermost portion of the convolution for directing the flame upwardly about the upper portion of the convolution, and a capillary wick extending into said fuel retainer and said valve casing for feeding fuel to the valve casing.

4. The combination with a plumbers torch including a burner and a fuel retainer for supplying fuel to the burner, of a valve casing, a nut threaded upon one portion of said valve casing, a burner carried by said nut and including a tube coiled to provide a convolution, a pair of lead sections leading to said convolution, said tube provided with an upwardly directed burner opening in the lowermost portion of the convolution for directing the flame upwardly about the upper portion of the convolution, a capillary wick extending into said fuel retainer and said valvecasing for'feeding fuel to the valve casing, and capillary wicks in the lead sections of said burner adapted to receive fuel from said first-named capillary wicks.

' VICTOR J. ROBIN. 

